target/linux/brcm2708/patches-4.19/950-0496-Added-IQaudIO-Pi-Codec-board-support-2969.patch

   1 From 7208ccb2165feb06eda3f04858d09388cd279c7d Mon Sep 17 00:00:00 2001
   2 From: IQaudIO <gordon@iqaudio.com>
   3 Date: Mon, 13 May 2019 21:53:05 +0100
   4 Subject: [PATCH 496/703] Added IQaudIO Pi-Codec board support (#2969)
   5
   6 Add support for the IQaudIO Pi-Codec board.
   7
   8 Signed-off-by: Gordon <gordon@iqaudio.com>
   9 ---
  10  arch/arm/boot/dts/overlays/Makefile           |   1 +
  11  arch/arm/boot/dts/overlays/README             |   6 +
  12  .../dts/overlays/iqaudio-codec-overlay.dts    |  42 +++
  13  arch/arm/configs/bcm2709_defconfig            |   1 +
  14  arch/arm/configs/bcmrpi_defconfig             |   1 +
  15  arch/arm64/configs/bcmrpi3_defconfig          |   1 +
  16  sound/soc/bcm/Kconfig                         |   7 +
  17  sound/soc/bcm/Makefile                        |   2 +
  18  sound/soc/bcm/iqaudio-codec.c                 | 250 ++++++++++++++++++
  19  9 files changed, 311 insertions(+)
  20  create mode 100644 arch/arm/boot/dts/overlays/iqaudio-codec-overlay.dts
  21  create mode 100644 sound/soc/bcm/iqaudio-codec.c
  22
  23 --- a/arch/arm/boot/dts/overlays/Makefile
  24 +++ b/arch/arm/boot/dts/overlays/Makefile
  25 @@ -68,6 +68,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
  26         i2c1-bcm2708.dtbo \
  27         i2s-gpio28-31.dtbo \
  28         ilitek251x.dtbo \
  29 +       iqaudio-codec.dtbo \
  30         iqaudio-dac.dtbo \
  31         iqaudio-dacplus.dtbo \
  32         iqaudio-digi-wm8804-audio.dtbo \
  33 --- a/arch/arm/boot/dts/overlays/README
  34 +++ b/arch/arm/boot/dts/overlays/README
  35 @@ -1160,6 +1160,12 @@ Params: interrupt               GPIO use
  36                                  touchscreen (in pixels)
  37
  38
  39 +Name:   iqaudio-codec
  40 +Info:   Configures the IQaudio Codec audio card
  41 +Load:   dtoverlay=iqaudio-codec
  42 +Params: <None>
  43 +
  44 +
  45  Name:   iqaudio-dac
  46  Info:   Configures the IQaudio DAC audio card
  47  Load:   dtoverlay=iqaudio-dac,<param>
  48 --- /dev/null
  49 +++ b/arch/arm/boot/dts/overlays/iqaudio-codec-overlay.dts
  50 @@ -0,0 +1,42 @@
  51 +// Definitions for IQaudIO CODEC
  52 +/dts-v1/;
  53 +/plugin/;
  54 +
  55 +/ {
  56 +       compatible = "brcm,bcm2708";
  57 +
  58 +       fragment@0 {
  59 +               target = <&i2s>;
  60 +               __overlay__ {
  61 +                       status = "okay";
  62 +               };
  63 +       };
  64 +
  65 +       fragment@1 {
  66 +               target = <&i2c1>;
  67 +               __overlay__ {
  68 +                       #address-cells = <1>;
  69 +                       #size-cells = <0>;
  70 +                       status = "okay";
  71 +
  72 +                       da2713@1a {
  73 +                               #sound-dai-cells = <0>;
  74 +                               compatible = "dlg,da7213";
  75 +                               reg = <0x1a>;
  76 +                               status = "okay";
  77 +                       };
  78 +               };
  79 +       };
  80 +
  81 +       fragment@2 {
  82 +               target = <&sound>;
  83 +               iqaudio_dac: __overlay__ {
  84 +                       compatible = "iqaudio,iqaudio-codec";
  85 +                       i2s-controller = <&i2s>;
  86 +                       status = "okay";
  87 +               };
  88 +       };
  89 +
  90 +       __overrides__ {
  91 +       };
  92 +};
  93 --- a/arch/arm/configs/bcm2709_defconfig
  94 +++ b/arch/arm/configs/bcm2709_defconfig
  95 @@ -919,6 +919,7 @@ CONFIG_SND_BCM2708_SOC_RPI_DAC=m
  96  CONFIG_SND_BCM2708_SOC_RPI_PROTO=m
  97  CONFIG_SND_BCM2708_SOC_JUSTBOOM_DAC=m
  98  CONFIG_SND_BCM2708_SOC_JUSTBOOM_DIGI=m
  99 +CONFIG_SND_BCM2708_SOC_IQAUDIO_CODEC=m
 100  CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC=m
 101  CONFIG_SND_BCM2708_SOC_IQAUDIO_DIGI=m
 102  CONFIG_SND_BCM2708_SOC_I_SABRE_Q2M=m
 103 --- a/arch/arm/configs/bcmrpi_defconfig
 104 +++ b/arch/arm/configs/bcmrpi_defconfig
 105 @@ -912,6 +912,7 @@ CONFIG_SND_BCM2708_SOC_RPI_DAC=m
 106  CONFIG_SND_BCM2708_SOC_RPI_PROTO=m
 107  CONFIG_SND_BCM2708_SOC_JUSTBOOM_DAC=m
 108  CONFIG_SND_BCM2708_SOC_JUSTBOOM_DIGI=m
 109 +CONFIG_SND_BCM2708_SOC_IQAUDIO_CODEC=m
 110  CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC=m
 111  CONFIG_SND_BCM2708_SOC_IQAUDIO_DIGI=m
 112  CONFIG_SND_BCM2708_SOC_I_SABRE_Q2M=m
 113 --- a/arch/arm64/configs/bcmrpi3_defconfig
 114 +++ b/arch/arm64/configs/bcmrpi3_defconfig
 115 @@ -807,6 +807,7 @@ CONFIG_SND_BCM2708_SOC_RPI_DAC=m
 116  CONFIG_SND_BCM2708_SOC_RPI_PROTO=m
 117  CONFIG_SND_BCM2708_SOC_JUSTBOOM_DAC=m
 118  CONFIG_SND_BCM2708_SOC_JUSTBOOM_DIGI=m
 119 +CONFIG_SND_BCM2708_SOC_IQAUDIO_CODEC=m
 120  CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC=m
 121  CONFIG_SND_BCM2708_SOC_IQAUDIO_DIGI=m
 122  CONFIG_SND_BCM2708_SOC_I_SABRE_Q2M=m
 123 --- a/sound/soc/bcm/Kconfig
 124 +++ b/sound/soc/bcm/Kconfig
 125 @@ -108,6 +108,13 @@ config SND_BCM2708_SOC_JUSTBOOM_DIGI
 126         help
 127           Say Y or M if you want to add support for JustBoom Digi.
 128
 129 +config SND_BCM2708_SOC_IQAUDIO_CODEC
 130 +       tristate "Support for IQaudIO-CODEC"
 131 +       depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
 132 +       select SND_SOC_DA7213
 133 +       help
 134 +         Say Y or M if you want to add support for IQaudIO-CODEC.
 135 +
 136  config SND_BCM2708_SOC_IQAUDIO_DAC
 137         tristate "Support for IQaudIO-DAC"
 138         depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
 139 --- a/sound/soc/bcm/Makefile
 140 +++ b/sound/soc/bcm/Makefile
 141 @@ -18,6 +18,7 @@ snd-soc-hifiberry-dacplusadc-objs := hif
 142  snd-soc-justboom-dac-objs := justboom-dac.o
 143  snd-soc-rpi-cirrus-objs := rpi-cirrus.o
 144  snd-soc-rpi-proto-objs := rpi-proto.o
 145 +snd-soc-iqaudio-codec-objs := iqaudio-codec.o
 146  snd-soc-iqaudio-dac-objs := iqaudio-dac.o
 147   snd-soc-i-sabre-q2m-objs := i-sabre-q2m.o
 148  snd-soc-audioinjector-pi-soundcard-objs := audioinjector-pi-soundcard.o
 149 @@ -42,6 +43,7 @@ obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_D
 150  obj-$(CONFIG_SND_BCM2708_SOC_JUSTBOOM_DAC) += snd-soc-justboom-dac.o
 151  obj-$(CONFIG_SND_BCM2708_SOC_RPI_CIRRUS) += snd-soc-rpi-cirrus.o
 152  obj-$(CONFIG_SND_BCM2708_SOC_RPI_PROTO) += snd-soc-rpi-proto.o
 153 +obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_CODEC) += snd-soc-iqaudio-codec.o
 154  obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC) += snd-soc-iqaudio-dac.o
 155   obj-$(CONFIG_SND_BCM2708_SOC_I_SABRE_Q2M) += snd-soc-i-sabre-q2m.o
 156  obj-$(CONFIG_SND_AUDIOINJECTOR_PI_SOUNDCARD) += snd-soc-audioinjector-pi-soundcard.o
 157 --- /dev/null
 158 +++ b/sound/soc/bcm/iqaudio-codec.c
 159 @@ -0,0 +1,250 @@
 160 +/*
 161 + * ASoC Driver for IQaudIO Raspberry Pi Codec board
 162 + *
 163 + * Author:     Gordon Garrity <gordon@iqaudio.com>
 164 + *             (C) Copyright IQaudio Limited, 2017-2019
 165 + *
 166 + * This program is free software; you can redistribute it and/or
 167 + * modify it under the terms of the GNU General Public License
 168 + * version 2 as published by the Free Software Foundation.
 169 + *
 170 + * This program is distributed in the hope that it will be useful, but
 171 + * WITHOUT ANY WARRANTY; without even the implied warranty of
 172 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 173 + * General Public License for more details.
 174 + */
 175 +
 176 +#include <linux/module.h>
 177 +#include <linux/gpio/consumer.h>
 178 +#include <linux/platform_device.h>
 179 +
 180 +#include <sound/core.h>
 181 +#include <sound/pcm.h>
 182 +#include <sound/pcm_params.h>
 183 +#include <sound/soc.h>
 184 +#include <sound/jack.h>
 185 +
 186 +#include <linux/acpi.h>
 187 +#include <linux/slab.h>
 188 +#include "../codecs/da7213.h"
 189 +
 190 +static int pll_out = DA7213_PLL_FREQ_OUT_90316800;
 191 +
 192 +static int snd_rpi_iqaudio_pll_control(struct snd_soc_dapm_widget *w,
 193 +                                      struct snd_kcontrol *k, int  event)
 194 +{
 195 +       int ret = 0;
 196 +       struct snd_soc_dapm_context *dapm = w->dapm;
 197 +       struct snd_soc_card *card = dapm->card;
 198 +       struct snd_soc_pcm_runtime *rtd =
 199 +               snd_soc_get_pcm_runtime(card, card->dai_link[0].name);
 200 +       struct snd_soc_dai *codec_dai = rtd->codec_dai;
 201 +
 202 +       if (SND_SOC_DAPM_EVENT_OFF(event)) {
 203 +               ret = snd_soc_dai_set_pll(codec_dai, 0, DA7213_SYSCLK_MCLK, 0,
 204 +                                         0);
 205 +               if (ret)
 206 +                       dev_err(card->dev, "Failed to bypass PLL: %d\n", ret);
 207 +       } else if (SND_SOC_DAPM_EVENT_ON(event)) {
 208 +               ret = snd_soc_dai_set_pll(codec_dai, 0, DA7213_SYSCLK_PLL, 0,
 209 +                                         pll_out);
 210 +               if (ret)
 211 +                       dev_err(card->dev, "Failed to enable PLL: %d\n", ret);
 212 +       }
 213 +
 214 +       return ret;
 215 +}
 216 +
 217 +static int snd_rpi_iqaudio_post_dapm_event(struct snd_soc_dapm_widget *w,
 218 +                              struct snd_kcontrol *kcontrol,
 219 +                              int event)
 220 +{
 221 +     switch (event) {
 222 +     case SND_SOC_DAPM_POST_PMU:
 223 +           /* Delay for mic bias ramp */
 224 +           msleep(1000);
 225 +           break;
 226 +     default:
 227 +           break;
 228 +     }
 229 +
 230 +     return 0;
 231 +}
 232 +
 233 +static const struct snd_soc_dapm_widget dapm_widgets[] = {
 234 +       SND_SOC_DAPM_HP("HP Jack", NULL),
 235 +       SND_SOC_DAPM_MIC("MIC Jack", NULL),
 236 +       SND_SOC_DAPM_MIC("Onboard MIC", NULL),
 237 +       SND_SOC_DAPM_LINE("AUX Jack", NULL),
 238 +       SND_SOC_DAPM_SUPPLY("PLL Control", SND_SOC_NOPM, 0, 0,
 239 +                           snd_rpi_iqaudio_pll_control,
 240 +                           SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
 241 +       SND_SOC_DAPM_POST("Post Power Up Event", snd_rpi_iqaudio_post_dapm_event),
 242 +};
 243 +
 244 +static const struct snd_soc_dapm_route audio_map[] = {
 245 +       {"HP Jack", NULL, "HPL"},
 246 +       {"HP Jack", NULL, "HPR"},
 247 +       {"HP Jack", NULL, "PLL Control"},
 248 +
 249 +       {"AUX Jack", NULL, "AUXR"},
 250 +       {"AUX Jack", NULL, "AUXL"},
 251 +       {"AUX Jack", NULL, "PLL Control"},
 252 +
 253 +       /* Assume Mic1 is linked to Headset and Mic2 to on-board mic */
 254 +       {"MIC Jack", NULL, "MIC1"},
 255 +       {"MIC Jack", NULL, "PLL Control"},
 256 +       {"Onboard MIC", NULL, "MIC2"},
 257 +       {"Onboard MIC", NULL, "PLL Control"},
 258 +};
 259 +
 260 +/* machine stream operations */
 261 +
 262 +static int snd_rpi_iqaudio_codec_init(struct snd_soc_pcm_runtime *rtd)
 263 +{
 264 +       struct snd_soc_dai *codec_dai = rtd->codec_dai;
 265 +       struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 266 +       int ret;
 267 +
 268 +       /* Set bclk ratio to align with codec's BCLK rate */
 269 +       ret = snd_soc_dai_set_bclk_ratio(cpu_dai, 64);
 270 +       if (ret) {
 271 +               dev_err(rtd->dev, "Failed to set CPU BLCK ratio\n");
 272 +               return ret;
 273 +       }
 274 +
 275 +       /* Set MCLK frequency to codec, onboard 11.2896MHz clock */
 276 +       return snd_soc_dai_set_sysclk(codec_dai, DA7213_CLKSRC_MCLK, 11289600,
 277 +                                     SND_SOC_CLOCK_OUT);
 278 +}
 279 +
 280 +static int snd_rpi_iqaudio_codec_hw_params(struct snd_pcm_substream *substream,
 281 +                                          struct snd_pcm_hw_params *params)
 282 +{
 283 +       struct snd_soc_pcm_runtime *rtd = substream->private_data;
 284 +       unsigned int samplerate = params_rate(params);
 285 +
 286 +       switch (samplerate) {
 287 +       case  8000:
 288 +       case 16000:
 289 +       case 32000:
 290 +       case 48000:
 291 +       case 96000:
 292 +               pll_out = DA7213_PLL_FREQ_OUT_98304000;
 293 +               return 0;
 294 +       case 44100:
 295 +       case 88200:
 296 +               pll_out = DA7213_PLL_FREQ_OUT_90316800;
 297 +               return 0;
 298 +       default:
 299 +               dev_err(rtd->dev,"Unsupported samplerate %d\n", samplerate);
 300 +               return -EINVAL;
 301 +       }
 302 +}
 303 +
 304 +static const struct snd_soc_ops snd_rpi_iqaudio_codec_ops = {
 305 +       .hw_params = snd_rpi_iqaudio_codec_hw_params,
 306 +};
 307 +
 308 +
 309 +static struct snd_soc_dai_link snd_rpi_iqaudio_codec_dai[] = {
 310 +{
 311 +       .cpu_dai_name           = "bcm2708-i2s.0",
 312 +       .codec_dai_name         = "da7213-hifi",
 313 +       .platform_name          = "bmc2708-i2s.0",
 314 +       .codec_name             = "da7213.1-001a",
 315 +       .dai_fmt                = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 316 +                                 SND_SOC_DAIFMT_CBM_CFM,
 317 +       .init                   = snd_rpi_iqaudio_codec_init,
 318 +       .ops                    = &snd_rpi_iqaudio_codec_ops,
 319 +       .symmetric_rates        = 1,
 320 +       .symmetric_channels     = 1,
 321 +       .symmetric_samplebits   = 1,
 322 +},
 323 +};
 324 +
 325 +/* audio machine driver */
 326 +static struct snd_soc_card snd_rpi_iqaudio_codec = {
 327 +       .owner                  = THIS_MODULE,
 328 +       .dai_link               = snd_rpi_iqaudio_codec_dai,
 329 +       .num_links              = ARRAY_SIZE(snd_rpi_iqaudio_codec_dai),
 330 +       .dapm_widgets           = dapm_widgets,
 331 +       .num_dapm_widgets       = ARRAY_SIZE(dapm_widgets),
 332 +       .dapm_routes            = audio_map,
 333 +       .num_dapm_routes        = ARRAY_SIZE(audio_map),
 334 +};
 335 +
 336 +static int snd_rpi_iqaudio_codec_probe(struct platform_device *pdev)
 337 +{
 338 +       int ret = 0;
 339 +
 340 +       snd_rpi_iqaudio_codec.dev = &pdev->dev;
 341 +
 342 +       if (pdev->dev.of_node) {
 343 +               struct device_node *i2s_node;
 344 +               struct snd_soc_card *card = &snd_rpi_iqaudio_codec;
 345 +               struct snd_soc_dai_link *dai = &snd_rpi_iqaudio_codec_dai[0];
 346 +
 347 +               i2s_node = of_parse_phandle(pdev->dev.of_node,
 348 +                                           "i2s-controller", 0);
 349 +               if (i2s_node) {
 350 +                       dai->cpu_dai_name = NULL;
 351 +                       dai->cpu_of_node = i2s_node;
 352 +                       dai->platform_name = NULL;
 353 +                       dai->platform_of_node = i2s_node;
 354 +               }
 355 +
 356 +               if (of_property_read_string(pdev->dev.of_node, "card_name",
 357 +                                           &card->name))
 358 +                       card->name = "IQaudIOCODEC";
 359 +
 360 +               if (of_property_read_string(pdev->dev.of_node, "dai_name",
 361 +                                           &dai->name))
 362 +                       dai->name = "IQaudIO CODEC";
 363 +
 364 +               if (of_property_read_string(pdev->dev.of_node,
 365 +                                       "dai_stream_name", &dai->stream_name))
 366 +                       dai->stream_name = "IQaudIO CODEC HiFi v1.1";
 367 +
 368 +       }
 369 +
 370 +       ret = snd_soc_register_card(&snd_rpi_iqaudio_codec);
 371 +       if (ret) {
 372 +               if (ret != -EPROBE_DEFER)
 373 +                       dev_err(&pdev->dev,
 374 +                               "snd_soc_register_card() failed: %d\n", ret);
 375 +               return ret;
 376 +       }
 377 +
 378 +       return 0;
 379 +}
 380 +
 381 +static int snd_rpi_iqaudio_codec_remove(struct platform_device *pdev)
 382 +{
 383 +       return snd_soc_unregister_card(&snd_rpi_iqaudio_codec);
 384 +}
 385 +
 386 +static const struct of_device_id iqaudio_of_match[] = {
 387 +       { .compatible = "iqaudio,iqaudio-codec", },
 388 +       {},
 389 +};
 390 +
 391 +MODULE_DEVICE_TABLE(of, iqaudio_of_match);
 392 +
 393 +static struct platform_driver snd_rpi_iqaudio_codec_driver = {
 394 +       .driver = {
 395 +               .name   = "snd-rpi-iqaudio-codec",
 396 +               .owner  = THIS_MODULE,
 397 +               .of_match_table = iqaudio_of_match,
 398 +       },
 399 +       .probe          = snd_rpi_iqaudio_codec_probe,
 400 +       .remove         = snd_rpi_iqaudio_codec_remove,
 401 +};
 402 +
 403 +
 404 +
 405 +module_platform_driver(snd_rpi_iqaudio_codec_driver);
 406 +
 407 +MODULE_AUTHOR("Gordon Garrity <gordon@iqaudio.com>");
 408 +MODULE_DESCRIPTION("ASoC Driver for IQaudIO CODEC");
 409 +MODULE_LICENSE("GPL v2");